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Effects of microplastic biofilms on nutrient cycling in simulated freshwater systems

The Science of The Total Environment 2020 207 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Xiong Xiong, Chenxi Wu Chenxi Wu Xiong Xiong, Xiong Xiong, Xiong Xiong, Xiong Xiong, Xiong Xiong, Xianchuan Chen, Xianchuan Chen, Xianchuan Chen, Xianchuan Chen, Xiong Xiong, Xiong Xiong, Chenxi Wu Chenxi Wu Xiong Xiong, Xiong Xiong, Xiong Xiong, Chenxi Wu Xiong Xiong, Xiong Xiong, Chenxi Wu Xianchuan Chen, Xianchuan Chen, Xianchuan Chen, Xianchuan Chen, Xiaofei Chen, Xiaofei Chen, Xiaofei Chen, Chenxi Wu Xiong Xiong, Xiong Xiong, Xianchuan Chen, Chenxi Wu Xianchuan Chen, Xiong Xiong, Chenxi Wu Xianchuan Chen, Xiong Xiong, Xiong Xiong, Xiong Xiong, Chenxi Wu Xiong Xiong, Xiong Xiong, Xiong Xiong, Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Xiong Xiong, Xiong Xiong, Xianchuan Chen, Xiong Xiong, Xianchuan Chen, Xiong Xiong, Chenxi Wu Xianchuan Chen, Yanhui Zhao, Xiong Xiong, Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Hane Zhou, Chenxi Wu Chenxi Wu Hane Zhou, Xiong Xiong, Hane Zhou, Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Xiong Xiong, Xiong Xiong, Xiong Xiong, Xiong Xiong, Xiong Xiong, Xiong Xiong, Xiong Xiong, Xiong Xiong, Hane Zhou, Xiong Xiong, Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Xiong Xiong, Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Xiong Xiong, Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu

Summary

Polypropylene microplastic biofilms in freshwater microcosms accelerated nitrogen cycling processes including ammonia oxidation and denitrification, and temporarily accumulated phosphorus before releasing it as biofilms matured and broke apart. The results demonstrate that microplastic-associated biofilms actively alter nutrient dynamics in freshwater systems, with potential consequences for water quality.

Polymers

Study Type Environmental

Microplastic surfaces could be colonized by microorganisms and form biofilms in aquatic ecosystem, which can participate in the nitrogen (N) and phosphorus (P) cycles. In this work, polypropylene squares were deployed in a pond for 30 days for microplastic biofilms colonization and then were transported to indoor microcosms at an environmental relevant level to study their effects on N and P cycling. Results showed that microplastic biofilms could accelerate ammonia and nitrite oxidation as well as denitrification. Presence of microplastic biofilms accumulated P temporarily and increased alkaline phosphatase activities (APA) in the system. Later in the experiment, disintegration of matured biofilms released N and P into the water. Mass balance calculation suggested possible N input caused by biological nitrogen fixation. Our results demonstrated that microplastics associated biofilms have the ability to alter the N and P cycling processes in aquatic system. However, additional works are required to further quantify the extent of such impact.

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